Just need to forward the ports.
To set ONT in Bridge mode, and raise the session on your own equipment.
In most cases, it's impossible. You have no rights to change some settings on the equipment of the provider.
To purchase compatible SFP module (ONU) and not to use ONT.
It's impossible. Even if you find and purchase compatible hardware provider will not connect to the network left the equipment.
- To separate the networks on which there is access to the Internet and stream IPTV
- The question is not clear.